1 files changed, 40 insertions, 0 deletions
diff --git a/layout/style/ServoTypes.h b/layout/style/ServoTypes.h
new file mode 100644
index 000000000..6d1324b88
--- /dev/null
+++ b/layout/style/ServoTypes.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ServoTypes_h
+#define mozilla_ServoTypes_h
+
+/*
+ * Type definitions used to interact with Servo. This gets included by nsINode,
+ * so don't add significant include dependencies to this file.
+ */
+
+struct ServoNodeData;
+namespace mozilla {
+
+/*
+ * Replaced types. These get mapped to associated Servo types in bindgen.
+ */
+
+template<typename T>
+struct ServoUnsafeCell {
+  T value;
+
+  // Ensure that primitive types (i.e. pointers) get zero-initialized.
+  ServoUnsafeCell() : value() {};
+};
+
+template<typename T>
+struct ServoCell {
+  ServoUnsafeCell<T> value;
+  T Get() const { return value.value; }
+  void Set(T arg) { value.value = arg; }
+  ServoCell() : value() {};
+};
+
+} // namespace mozilla
+
+#endif // mozilla_ServoTypes_h